Here is another batch of modem-routers to be sold 100% in aid of charity, the Dogs Trust.
The Dogs Trust has a strict policy: “We never destroy a healthy dog.“
These unlocked devices are compatible with the BT Openreach FTTC services in Britain.
The modems are unused – originally intended for ChinaTel – but are unlocked now for BT and other providers.
The HG622 is based on the Broadcom BCM6368 System-on-Chip. So DSL performance should be the same or similar to the Openreach HG612 which is powered by the 6368, too.
However, the HG622 also has four ethernet (10/100) ports instead of just two, a USB host port and also 802.11n wi-fi (up to 300Mbps).
Below are some photos of the Huawei HG622:
Interested?
The ebay charity sale is here: http://www.ebay.co.uk/itm/130840515303
SOLD OUT!
Re-listed: http://www.ebay.co.uk/itm/130897747759
More screenshots here:
http://asbokid.picturepush.com/slideshow?alid=241207&format=1024
EDIT1:
A total of £920 has so far been raised through ebay for the Dogs Trust from the sale of these two models of Huawei modem.
Thank you everyone! Hopefully we can soon make £1,000!
EDIT2:
Thanks also to Gary Coughlan of British Columbia and Andy Potter of Lanarkshire who made their own personal donations to the Dogs Trust.
Do these work in the same way as the HG612? Eg one port can be WAN PPPoE to a firewall, another port can be a LAN (192.168.x.x) for getting stat’s from the ADSL.
THanks,
Chris.
Hi Chris,
Thanks for your message. Running the HG622 as an ethernet bridge is one possibility – or alternatively, a PPPoE client can be run on the HG622, with all routing and firewalling done on the Huawei. Performance reportedly can take a hit if you have a particularly good DSL connection though.
cheers, a
I grabbed one – Dogs Trust is a worthy cause (I already Sponsor a Dog with them).
I have a HG612 at home (unlocked following your instructions) and the two Ethernet ports are great. One goes to my SonicWall WAN for PPPoE, the other goes to the LAN for management of the 612.
I’ve wanted more of the HGs for work as we’ve been using Vigor 120s but they only have a single Ethernet port, so to get line stat’s means killing an active connection
Thank you Chris for supporting the Dogs Trust. Hope you find the device useful.
Cheers, asbokid
Hi, i recently purchased hg622 of you from the charity, is there anyway you can patch the firmware so the line attenuation shows up on vdsl2?, if you can do this would you put the patched firmware on you website?, i really thought they would of fixed that bug by now lol.
Hi Carl,
Thanks for supporting the Dogs Trust!
Huawei doesn’t seem to calculate an aggregate figure for attenuation for VDSL2 connections. It’s not just this device, but other Huawei devices too.
Presumably because it would involve aggregating attenuation across multiple VDSL2 frequency bands, some of which are utilised only in part or not at all. So how do you add those?
That is just how Huawei has done it. See here, where a single figure for attenuation is available for ADSL2+ connections. That is because there’s only one band used for each direction, but as for VDSL2 connections, no single attenuation figure is provided:
http://bandaancha.eu/foros/huawei-hg622-router-vdsl-jazztel-1688055.
The xdslcmd command available through the telnet interface provides detailed attenuation for every frequency band, used or otherwise:
It’s possible to manually combine all those attenuation measurements from each frequency band into a single figure, using the formula listed below, if a single figure is important to you.
http://huaweihg612hacking.wordpress.com/2011/10/01/measuring-line-characteristics-on-the-huawei/
cheers, a
Thanks for your reply, what is the xdslcmd ?,
Hi again Carl,
You need to use telnet to log into the device.
So first of all, get a Windows shell, and then run “telnet 192.168.1.1″ from the C:/> prompt.
Then login with username “admin” and password “admin”.
Then get a Unix shell by typing “sh” (for shell) at the “ATP>” prompt.
Then run “xdslcmd info –stats” (that’s two minus signs before the word “stats”).
And “xdslcmd info –pbParams” (that’s two minus signs before the word “pbParams”).
And that should give you (most) all the line statistics you would ever want!
cheers, a
HI A,
I’d like to update the dsl blob in the 622 ( when it arrives) , will the same tools ( that you’ve provided for the HG612) work for the Hg622 ?
Cheers
SB
Hi Starbuck,
I briefly looked, and transiently replacing the blob (i.e. changes lost on reboot) is similar:
There is no tftp client, so you have to use ftp instead.
There is actually an ftp server running by default on the HG622
The firewall rulechain has to be *temporarily* relaxed to allow access to the ftp server.
The ftp username is ‘ftp’ and the password is ” (i.e. nothing)
Alternatively, the blob is copied to a USB flash memory stick.
The flash volume is then automatically mounted under the HG622 file system
And the blob is loaded as per: http://huaweihg612hacking.wordpress.com/2012/11/11/dynamically-swapping-out-the-hardware-driver-blob/
cheers, a
Hi A,
Thank for the quick reply.
I was hoping to update the dsl blob as I did with my HG612. I see from the auction, that you have unlocked the HG622′s . Would that mean that you have the firmware ? ( I can’t see it one H’s website, and I’d like to experiment to see if I can permanently update the dsl blob) I was wondering how you unlocked them. Was it a JTAG dump then mod like the HG612′s ?
Sorry for the disjointed post, I’m fresh out of surgery and still a little groggy. LOL
Cheers
GaryC
Hi A,
Thank for the quick reply.
I was hoping to update the dsl blob as I did with my HG612. I see from the auction, that you have unlocked the HG622′s . Would that mean that you have the firmware ? ( I can’t see it one H’s website, and I’d like to experiment to see if I can permanently update the dsl blob) I was wondering how you unlocked them. Was it a JTAG dump then mod like the HG612′s ?
Sorry for the disjointed post, I’m fresh out of surgery and still a little groggy. LOL
Cheers
GaryC
Heh, Gary,
Sorry to hear about the surgery, but glad you’re through it successfully!
The best tool today for dismantling the HG622 firmware is the “Firmware Mod Kit” (FMK) from Craig Heffner, Jeremy Collake, et al.
See: http://code.google.com/p/firmware-mod-kit/
The Kit contains a new tool called “extract-ng” (ng=next generation).
That is used to decompress and extract the squashfs root file system. The tool tries many patched versions of the unsquashfs and mksquashfs tools until it (hopefully) finds the right one.
You then make the modifications to that decompressed squashfs file system – swapping out the BLOB or whatever.
The mksquashfs counterpart to the version of unsquashfs found to be compatible is then used to recompress the file system.
And then you use one from a choice of several tools to bond the new file system to the original MIPS kernel.
That produces a firmware image, with a “Broadcom” header, and you simply cross your fingers and flash it into the router!
cheers, a
Hi,
I notice the Czech O2 HG622 firmware can be download. Would I be correct in thinking that would work with UK FTTC? I see that for adsl2 is it annex b so assume that the adsl2 side won’t work in the UK.
Hi Les70,
I tried the Czech firmware but it crashed shortly after boot. Couldn’t see why.
cheers, a
Hi Les,
That Czech firmware image for the HG622 doesn’t seem to work at all. After flashing it in, it crashes soon after boot. The Jazztel firmware is okay though.
cheers, a
Have you got any of these left? The eBay auction seems to have ended.
Hi Alec,
Yup. Another batch will be listed in a bit.
cheers, a
Hi Asbo – its snadge, hope all is well – when will you be listing the next batch?
cheers
Hi Snadge,
Hope you’re doing well!
It’s more time-efficient to unlock a batch in one go, so that should be over the next few days!
Cheers, a
Help!! please. How do you you escape from the China Tel firmware which I foolishly uploaded as a rash experiment. I can’t find an upload option on the Chinese GUI and the usual hold the reset whilst powering up just get me to page with option to download micro_httpd in a . tar.
Hi Les,
Oops! Don’t worry, if the bootloader isn’t damaged then you should always be able to flash in suitable firmware.
Have you cleared the cache, all cookies, etc? Easiest by putting Firefox into “Private Browsing”.
Where did the ChinaTel firmware come from? Trusting it is a standard Broadcom image with no bootloader (CFE).
cheers, a
Dear asbo,
I need HG622 version of this file: http://pastebin.com/XbDjJC3T
Could you please help?
Best wishes
Dear Mr.Anderson,
That document is found in the root file system under a file called ~/etc/t_tree.xml
cheers, a
I found the file, thanks again
Hi Asbokid,
I live in Brazil and want to grab one HG622.
Is possible to have international shipping as an option in next batch ?
Hi Paulo,
Thanks for the message. An int’l shipping option should be fine (famous last words!)
cheers, a
Thanks.
Hi asbokid, not trying to advertise, but I have several routers available for really great prices as we need to clear out some space.
Are you or is somebody else interested? If so, please see http://forum.kitz.co.uk/index.php/topic,12237.msg230726.html#new.
Thanks!
Just some of the routers/modems available are: Huawei HG612 and 2Wire 2700HGV.
Thanks!
Wow dude, really?, Alec, this is for charity not your pockets.
I understand. I am really sorry asbokid.
Please remove my post and please accept my sincere apologies.
Nice to see someone say sorry, sounds like your a good guy, other people would just carry on with there witty comments, asbokid, is there anyway you can patch firmware so the crc and fec are in the right places, ive noticed on all hg612,hg610 and hg622 that crc errors are infact the fec errors and vice versa, could you fix the firmware and post a copy?.
Hi Carl,
You’re quite right. The error counters on those models of Huawei are all confused.
I would love to patch the firmwares, but we don’t have the sourcecode to the embedded webserver. And it contains quite a lot of modifications. It was originally the BSD-licensed webserver released by Acme Labs. The BSD licence allows Huawei (or any other company) to make modifications without disclosing those mods to the open source community. I’ve never understood why anyone would develop code and then hand it over under a BSD licence for free to the commercial sector. But that is what has happened. And that’s where it’s stuck.
As such, xdslcmd is the only reliable method for getting stats out of Broadcom devices.
cheers,a
Hi,
We are able to patch such binary files and rebuild firmwares with improvements. But Unfortunately we do not have any Huawei device for testing. If anyone is interested to donate hardware for open-source software development then please contact (e-mail) me at; volkan-k {at} users.sourceforge.net
Best wishes,
Asbokid, So, the hg622 works fantastic, I have a few problems however, cant seem to get wifi working, the transceiver keeps stopping although it says enabled, so there is no broadcast, also cant set up modem on its own, when I do, the responsiveness is terrible, maybe im doing something wrong maybe not, the only way I can work it is setup like the hg612 to the hhb3, this is how im running it now, my last problem is, I cant route web interface through the same wan/lan, and if I add another cable for the web interface the hhb3 kills my connection to the pc after long periods of idle. Is there anyway I can set it up like hg612 and jus use the one wan/lan for the bandwidth and the web interface?.
Is there any better firmware I can use?, I noticed that dhcp transmission is missing in the jazztel firmware, this was enabled on hg612 for bt connection.
woops sorry I mean dhcp transparent transmission
Hi Carl, A HG622 has been running in ADSL2+ mode for months, but it hasn’t really been used in VDSL2 mode (as no FTTC in this area). From your report and others, the Wifi of the unit does seem poor. There is the original Chinese firmware for those who can understand it, and for months I’ve been trying to get the firmware for the HG622 from a Pakistan carrier, but the router is very expensive there (~GBP150), so noone wants to part with them. I think I understand the exact configuration you want, but not at all sure how to enable it. Maybe a router other than the HH3 would be the solution?
Did you actually get that working?
I tried many times to use that feature on my HG612 and my router never got a response from DHCP.
Actually no, all I can do is connect with 1 cable for bandwidth, if I connect the other cable for the web interface then the router or my PC stops communicating, which is weird because the BT open reach version works fine with that setup, I just have to keep plugging in the cable when o need to get in the modem. I’ve tried all kinds of setup, if I turn on dhcp it seems to work but then my router gets confused and stops accepting IP addresses which leaves the same result plus WiFi is broke a s well lol, I think the original firmware may be needed but I don’t speak Chinese lol
Not sure if you understood, I meant were you able to use the DHCP transparent option on the HG612? As I understand it, that feature is meant to allow you to have the HG612 do the PPPoE connection and then it would transparently bridge the connection to you’re router, giving it the public IP via DHCP.
When I tried it my router got no response from the DHCP request. I can’t remember if I tried it by statically assigning my public IP to the router, I think I might have and that didn’t work either.
Using a single cable for both the public and private network I can understand why it doesn’t work, as it only passes VLAN traffic to the tagged ports. Not sure how that works with ADSL though that doesn’t use VLANs, I assume it still segregates the networking internally somehow.
Im sure it was working on the hg612, thats how bt had it set up, yes, it looks like you need 2 cables, 1 for the web interface and the other for traffic, however, the hg622 stops the hhb3 from comunicating when using this config, ive found a work around which in theory shouldnt even work, i added an extra ptm link, bridged it to the router and ticked dhcp relay, plugged my pc in lan 1 on the modem and set the router as bt would of done in bridge mode, now, the router shows my pc as being connected to the router itself(hhb3) and even though the pc is plugged into the modem, its using all the auth and dhcp from the router, but if i remove the extra ptm link which is in pppoe-bridged, my pc wont connect to the internet, so i really do not know how its working lol, my pc connection is very very responsive, more than ever being connected this way, i think the firmware is very poor, and not well written at all, im sure my pc shouldnt have a connection like this.Asbokid, do i need annex m ticked for a bt connection on vdsl2?
Your configuration is very odd, but I’m fairly sure BT do not use DHCP transparent mode as that is certainly not how my HG612 was configured.
In dhcp transparent mode the HG612 handles the PPPoE connection sets up a transparent bridge so that the router gets the public IP, where normally the machine establishing the PPPoE connection gets the public IP.
On BT it is my understanding that the HomeHub3 handles the PPPoE connection.
Hmm, I reset my hg612 and dhcp transparant is ticked, oh well, either way, with and without it ticked, the modem is working fine, its just this other one lol, try and set it up to a standard and it won’t work, make something up and it works lol,.
Hi Carl,
The Annex M is for ADSL2+ only. It is for extended upstream, but isn’t used with VDSL2.
Don’t really understand about second ptm interfaces. Had thought there could only be one up at a time. There are several different firmwares for the HG622, although this is the latest, but definitely buggy and maybe not the best?
A hacker in Hungary, Csaba Sipos has found an even newer firmware blob for the devices which might improve performance too. He’s building a new firmware image at this moment.
With or without your tweaking, does the HG622 perform better than the HG612, Carl?
cheers, a
I think it performs the same really, at first, my bandwitdth shot up from 43 to 51, but something happened and now my ping is 25 from 5 and bandwidth is back to 43, please let me know when theres better firmware available, bt have to connection one is internet/tro69 and the other is just internet, I now have 3 ptm links lol, my setup shouldn’t be working, my pc is plugged into lan 1 on the modem, hhb3 is plugged into lan2 on the modem, plus a cable for web interface going to the router from the modem, the router shows that my pc is connected to the actual router lol, very weird.
Maybe the unused ptm interfaces could be deleted? As you know, normally, the WAN port of the HH3b would be connected to LAN port 1 of the Huawei modem, and LAN2 of the Huawei would connect to one of the LAN ports of the HH3b. Your way, directly connecting the PC to the modem, might well improve performance.
What caused the jump in speed from 43 to 51, and more importantly, why did it drop back down again? Has there been a line defect? Or just crosstalk from rapid take-up of VDSL2 from your cabinet? Have you tried Paul’s (BaldEagle’s) scripts? Maybe they could shed some light?
cheers, a
It would indeed improve performance, the thing is even though my PC is directly connected to the modem, it is still using the hhb3 author and dhcp, but if I delete the ptm link I created the PC stops receiving bandwidth, I just don’t get how its working, I shouldn’t need that extra ptm link its totally messes up lol, my brain hurts trying to work it out, but at least I don’t have to plug a cable in now when I want to see stats,.Oh, I think I’m getting more CRC errors with the hg622, that why after a while my bandwidth degraded, gonna give it a few weeks with this setup and if nothing improves or it gets worse I will go back to BT modem until you find some firmware , there seems to be a few features missing in jazz tel firmware.
Well, seems to be working fine with this crazy set up, bandwidth and ping are improving, snr is all good, I guess ill carry on using this set up, who cares if its working right..
I mean, who cares how its set up as long as its working good with good performance and responsiveness.
Can someone tell me the best connection to use fom modem to hhb3?, ip-bridged or pppoe-bridged?, the router is wherei enter the password etc.
PPPoE_Bridged if the router uses PPPoE to connect to the ISP, IP_Bridged if it just uses DHCP.
So then i dont suppose it matters then, as the hhb3 is both i think, bt have the 612 set to ip bridged, i just wanted to know which is better at communicating, what would you set yours up as?.
Hi Carl,
Using the 612 for PPPoE bridging is better, as the processor isn’t powerful enough to run the PPP daemon without suffering a performance loss.
cheers, a
I was under the impression it was related to if the connection is purely VLAN based (my connection used to be like this, no PPP required just a DHCP request) or if you establish the connection to the ISP over PPP. Neither run PPP on the modem itself.
I could be mistaken though as I believe you can establish the PPP connection from the router with either mode selected, so I have no idea what parameters it actually changes on the modem.
Sorry, you’re right Alexander. 2.40am blues! I was trying to say best not to run the ppp daemon on the Huawei. At higher line rates, it will max-out before delivering the maximum throughput.
cheers, a
so i just carry on using ip_bridged then?, even on the hg622?
I have the hg622 setup as, ptm1(vlan101,802.p=2)internet,ip_bridged, ptm2(vlan301,802.p=5)internet and tro69, ip_routed, and ptm3(vlan101.802.p=1)internet, ip_bridged, i use ptm3 link for my pc wich is connected to the modem but still uses the router, i explained earlier how weird it is but is works flawless, standard way does not work if you want the web interface plugged in also, and now beleive it or not, the hhb3 will not dial up now without the 3rd ptm link on the hg622, so should i leave them as ip_bridged or change to pppoe_bridged?
Hi Carl,
So long as it works! We haven’t got FTTC here but it would be tempting to use the PC to form the PPP layer. For ultimate performance for heavy gamers, it’s got to be faster than a HH3. Not practical, perhaps, if you’ve got several PCs running at once?
cheers, a
That is why I ended up with this: http://www.flickr.com/photos/alexatkinuk/8562831257/
Its a shame there isn’t an affordable off the shelf PCIe VDSL2 modem card as it would be very interesting to have a single PC completely replace the HG612. Still, at least this way in the unlikely even I ever switch to fibre I should still be able to use the same router.
Are there ADSL2+ PCI-E cards? – I would love to get a broadcom chipped PCI-E modem in my PC
You are more likely to find PCI cards for ADSL2+ eg http://linitx.com/product/12181 (there is one on eBay for a bit cheaper)
Although from what I just read it sounds like that card is ACTUALLY a full router on a PCI card, which could be better or worse depending on its configuration options as theoretically you could take as much load off the PC as you wanted – if its configurable enough.
Now that would be cool, if they put a Broadcom BCM6368 on a PCIe card.
Hi Alexander,
Now that looks good! Does it work well? I tried something similar with an old Fujitsu industrial AMD64 board. But hit a bottleneck with the PCI bus for the gigabit NICs.
cheers, a
In past ( 8Years ago ) I used an old Pentium II 800Mhz / 128MB Ram as a router to a 12Mb/s connection. Today I used HG612 as bridge with a 35Mb/s connection and pppoe managed by Tplink WDR4300 router ( very stable – 128MB RAM – 8MB flash ) running Openwrt.
It works brilliant. What people do not seem to realise is that most routers end up running close or even at capacity on VDSL2 connections. My previous router the Buffalo WZR-HP-G300NH was literally limping along with PPPoE eating the whole CPU, but it wasn’t immediately obvious unless you were looking. The difference once I switched was huge though, things loading quicker, faster torrents, etc.
The only problem I had was power management tripping up the onboard LAN for some reason, but fortunately as its a custom build of OpenWRT the developer kindly switched all power management off in the build for me. It makes sense anyway, you don’t really want latency fluctuations on a router due to frequency scaling, etc.
I really wanted to test is maximum routing speed to see what its capable of but there just isn’t a reliable accurate speed test script you can install locally. I have discovered speedtest.net mini is very hit and miss.
I have never seem the load average go about 0.5 though which only happens due to using the web UI, PHP scripts, etc and being a dual-core 2.0 would mean maximum utilisation. So I suspect its capable of pretty high routing speeds.
You may also notice I used a USB ethernet adapter to connect the second HG612 LAN port into the router itself so it doesn’t waste a port on my network switch. It might not look as neat doing that (as I had to drill a hole in the front panel) but its very effective. Any clients which do not need to pass much data between each other can just be plugged in over USB ethernet making it quite expandable.
Tried your suggestion about just using my pc as the dial up instead of hhb3, i was expecting it to be alot more stable and faster but, it was actualy 2meg slower on upload and download, this is windows 8 64bit, so it looks like im getting my best from the equipment i have in hand.
Crikey, that doesn’t make any sense at all, which seems to be a theme with your configuration.
All i can think of is the quality of the wan miniport drivers in windows 8
My pc isnt a slow one either, 16gb of ram, core i7 3820, ah wait a min, it could be down to the bigfoot killer nic, it really is terrible, and its designed to bypass the stack.
Any new on new firmware for hg622, seem to be getting quite a few crc errors, just to let you know the hg622 is setup to standard now and works like a charm this time, don’t know why it didn’t work before, so I only have 2 ptm links now lol which is normal as I cant route vlan301 through the one link on the hg622 like you can on the hg612.
Have you tried following the instructions for dynamically swapping out the blob on the HG612 just to test? I would expect them to use the same driver so it may very well “just work”. Then you just need someone to package it into a firmware image, if it works.
Can you tell me if 672 crc errors in 2 and half days is ok?, seem to build up during the night, if its the norm for that many crc in theat space of time then i guess my line and setup is good.
It is OK unless it disconnects.
The packets will be retransmitted if CRC or CV Error occurs.
See also: http://whirlpool.net.au/wiki/adsl_theory_counters
Great, then ill be leaving my connection alone now to see if it improves again, I think its down to a taxi parking right outside my house causing noise on my line and making my ip profile drop, so theres not much else I can do, ive tried 3 different modems ,bt’s, hg610 and the one im using now hg622, sometimes I can get an attainable rate of 72meg, but most of the time its just 60, I live very far from the cab also so im really lucky to be getting this speed.
thing is, high CRC’s indicate there is a nosie source..i noticed my CRC count is high with my BCM6362 chipset router, i get about 10 per hour (7db Noise Margin) and 100 overnight when not in use…ive got back to me trusty DG834N (BCM6358) and Iam getting 1 per hour and 5-10 overnight which is about normal for a 26db line @ 7db SNRM, a CRC means the a small portion of data had errors to the point it is discarded and requested for again…this can sometimes show as slight delay in page loads etc.
The question is, what is a high CRC? What period of time does a CRC refer to, is it just one packet?
Considering the data rate at which VDSL2 is transferring data, I doubt a few CRC errors an hour or less is worth worrying about.
as you note, every line is different, only one can gauge themselves if their CRC’s are high – if your Noise Margin remains stable then this indicates normal/average noise activity on your line, therefore one could gauge from the Noise Margin in use and how much data you have transferred as to whether or not your CRC’s are high.. shorter lines should get less to due to less noise, longer lines would usually have higher error count and CRC’s (and why they tend to have higher Target Noise Margins too) – one of the main stats I monitor are RS, RSCorr and RSUnCorr – I watch how much in terms of a ‘percentage’ of my traffic is being corrected or CRC’d – when I use my 7db Noise Margin (26db line) I get about 0.025% traffic corrected if I use 3db Noise Margin I get about 1% traffic corrected and a higher CRC count… all interesting stuff!
By VDSL of course I mean ADSL too.
Looks like I have interference somewhere or a dodgy joint or cracked wire, all of a sudden I started getting over 200 crc a second, after half hour the modem resynced from 47meg to 45meg and im now back to the same crc count as before it started, weather is warming up so any dodgy joint or wire will get worse, which looks likely to be the case, but, I cannot get BT to find this as in comes and goes as you would expect. Nothing much else I can do, cant keep swapping and buying modems hoping it will cure.
It’s been said before in relation to a similar problem to yours, Carl, but maybe it’s time to invest in a TDR device (a Hawk, Mole, JDSU or Exfo). These devices are what all Openreach engineers carry. They let them test the line from the subscriber end for defects – discontinuities – shorts, opens, whether only partial at this stage. These are identifed by deflections in the wave reflected from a pulse injected into the line. Secondhand on a famous auction website, a TDR costs about £50 upwards.
cheers, a
Ive had a look on ebay, they are expensive, especialy the vdsl models, I would be waisting my money, even if I could prove the defect, im still getting more speed than my estimate, its not the speed I want really, I want quality, good ping no fluctuations that’s all, ive asked to be capped but they wont do it either. I can improve the crc count with different modems, but not by much, as that person you mentioned tweaked up the firmware yet for 622?.
Please make sure you enabled both Bitswapping and Seamless Rate Adaption (SRA) features for xDSL stability. Then you should get no disconnects and CRCs shouldn’t be problem.
IMHO You should also be able to get lower speeds and errors but higher SNR Margin and stability using xdslcmd to change xDSL profile.
The budget TDRs are about £50 – £100. £100 buys a very dirty BT Hawk TDR tester. £50 buys one of the older BT Mole (BT 301C) testers. They will all identify a physical defect in the line, whether it’s used for voiceband only or ADSL or VDSL2.
You might get some better answers on what to do by asking on the kitz.co.uk forum where there are lots of competent contributors.
The forum has some very skilled BT Openreach engineers answering problems there, and it has recently been joined by a high-ranking PTO (precision testing officer) from BT OR.
They would probably know the backdoors – the right thing to say or ask for, to get the line properly tested.
The firmware tweak for the 622, if it works, will only affect the wireless performance / reliability. So far as I know, the DSL performance of the 622 is the best it can be.
cheers, a
Does the 622 not use the same VDSL driver as the 612? Or does it already have the latest version?
Hi Mr Anderson,
Carl is using the HG622 for VDSL2 here in Britain where it is not currently possible to adjust the SNR margin, at least not with Openreach VDSL2, and I don’t think any provider supports SRA either
Poor show in Britain!
cheers, a
Sad to hear that. Both SRA feature & SNR adjustments are possible & supported by ISPs in my country.
Alexander, you have asked an interesting pair of questions.
Looking at my HG622′s Status / Device Information page, I see that the A2pv6C033f.d23d BLOB is in use.
If we check back, the SP10 firmware of the HG612 originally used the A2pv6C030b.d22g BLOB. The updated firmware now contains the A2pv6C035m.d22g BLOB.
Considering their similarity I thought someone might have tried to dynamically replace the BLOB in the HG622, just to see what happens.
The question of course is, what does the bit after the period stand for? The version of some library it was compiled against perhaps?
Just had a quick look and remember now why it wasn’t tried before. For downloading and uploading files to the HG622, the firmware has both wget and ftpget. Yet neither seems to work, always returning a command line error or worse a segv fault. They are part of busybox which has not been compiled properly it seems. Probably due to being stripped down to save space. There’s always the Telnet Upload Trick which is documented here [1] Or failing that, the file system would have to be rebuilt with the new blob in it. Hmm.. Nice little job for someone?! cheers, a
[1] http://forum.kitz.co.uk/index.php/topic,10635.msg212318.html#msg212318
So ive decide to go back to the hg612, with the new blob, I can say that it doesn’t perform as well on connections that are far from the cab, I can sync at 45meg with hg622 but only get 44meg with hg612 and new blob, I do have a lot less crc errors though so im going to stick with this, I hope my line stays connected long enough to get my fastpath back.
You will notice even my connection close to the cabinet synced slower on the new blob but actually performs faster. Its not necessarily raw speed, latency seemed better even though ping tests didn’t show any difference. Like you said, I think its probably due to less errors.
When that guy as patched the firmware for hg622 can you let me know please, or if he has a website maybe give me the link or something, you know, i had sra enabled and i thin that’s the reason for my ip profile dropping, im not swapping back again though i need to get stable again before anything else.
surely there must be a factory image for the hg622?
damit, it still went off with the hg612, all correction is turned up full now, and I mean full, my ping is really high in the 40′s but at least im not getting any errors lol, if it goes of again now im error free then something as clearly give up the ghost. Sorry, you don’t need to here my sorrows lol.
Wait, shouldn’t you still get errors with high settings its just that they are corrected?
im staring to get crcs again now its getting late, but not as many, as interleave is up full for download and upload, bitswap for some reason Is balanced now like 300/300 or 45/45, so I gather that’s on maximum, yeah, still getting errors, but the cab is doing all the correcting now wich leaves my ping really high and a useless line for gaming.
AFAIK Higher Interleave depth means less CRC but more FEC errors (and also less disconnects but more latency);
Without interleaving, packets have to be retransmitted due to errors, with enough interleave depth packets with errors will be fixed and will not be retransmitted.
Please see: http://en.wikipedia.org/wiki/Asymmetric_digital_subscriber_line#Interleaving_and_fastpath
Yeah your right, but its turned up that high and my ip profile as gone that low, im only getting a few interleave errors and only a few crc errors, now, if only I could keep this ip profile but get my fastpath back I would be happy, as I don’t download unless I buy a game, so 35meg is plenty for me.
Can you make the graph files work with the hg622, it fails at putting in the username and password even though there the same